Polyurethane silentblocks: reviews, specs, photos

In any car there is a large number of rubber components. These are bushings for various purposes, sealing rings, covers, carpets, mud flaps and, of course, silentblocks. The latter is understood as a product of two metal bushings, one of which is of smaller diameter and placed inside the other, connected to each other by means of rubber. Dimensions of silent blocks vary over a wide range.

Due to the fact that the rubber wears out quickly enough and does not work well at negative temperatures, it is tried to replace it with a more stable and durable material, such as polyurethane. Polyurethane silentblocks, reviews of which do not have time to scatter over the Internet, will be the subject of this article. Consider the positive aspects of these products, their difference from rubber competitors, properties, varieties and methods of production.

Appointment

For a more understandable comparison and understanding, an appointment should be indicated. Silentblock as a rubber-metal bushing in the lever is the link between the suspension elements of the car. It depends on the flexibility, elasticity and reliability of the connections between the levers. When receiving a load, a blow on one of the connecting levers, the silentblock extinguishes it and transmits only a part of the oscillations.

Useful properties of silent blocks cause their wide application in the car. They can be found:

• In the front suspension;
• In the rear suspension;
• For fastening the power unit and gearbox;
• In the steering mechanisms.

Attractive features of polyurethane

To make the advantages of polyurethane products more understandable, let us consider its properties. First of all, polyurethane is an artificially created synthetic elastomer. Depending on the modes of manufacturing technology and the regulated number of components included in the composition, several types of material can be obtained at the outlet. In this case, the strength of the simplest version is 4 times that of rubber. The material is not afraid of working in aggressive environments. Operating temperature ranges from -60 to +80 degrees Celsius.

Polyurethane silentblocks reviews have the most positive. Of course, there are enough negative ones, which are explained by some shortcomings of the material, explained below. Well and among advantages it is necessary to allocate:

• High strength;
• Greater resistance to impact loads;
• Wide range of operating temperatures;
• Successful resistance to aggressive environments: oil, gasoline, acids, salt;
• The ability to change their physico-chemical properties when changing the composition.

The strength of polyurethane silicone blocks is not only due to the fact that the material itself is strong, but also because the bond between the metal and polyurethane is also significant and superior to rubber. That's why there are practically no detachments among the bushings from this material. At low temperatures, polyurethane does not douche and significantly longer ages, when compared with rubber. Pros, as we see, a lot, but as for the shortcomings?

A little tar in a barrel of honey

Despite a lot of positive moments, polyurethane silentblocks have some drawbacks. The most important of them is the cost. The prices for such silent blocks are at least 2 times higher than the prices for rubber analogues. And the stronger the type of polyurethane, the greater this difference. For example, a silicone block from polyurethane to a foreign car can have a price of 2500 rubles., While a native rubber analog will cost 500 rubles.

The second point, which reduces the number of people using such products, is rigidity. Suspension on polyurethane silentblocks is well suited for a sports car. For a simple lightweight car, the joy of riding can be significantly reduced due to the rigid grip of polyurethane. That's why for the engine cushions this material is used much less often.

It is also worth noting that the polyurethane silentblock reviews in the winter are worse because of the creaking. And this moment actually takes place, because silicone blocks of polyurethane, unlike rubber ones, must always be lubricated during installation.

With all this, buying a polyurethane product, it is mandatory to study the suppliers. The production process is not so complicated, and there are many enterprises involved in manufacturing the material. And, of course, the quality of different manufacturers can differ at times. And such an indicator as price, in this case a little helps. Polyurethane silentblocks, reviews on which are consistently good, are of the best quality.

Famous manufacturers

For a short period of time polyurethane silentblocks for VAZ, GAZ, UAZ and foreign cars won their market share. Among the companies-manufacturers it is necessary to allocate:

• "Point of Support".
• "Five-time resource."
• LLC Polyurethane.

The company "Point of support" has only positive reviews and supplies polyurethane products since 2000. They manufacture silent blocks of levers, suspension brackets, bushings of shock absorbers, stabilizers and many others, such necessary to replace the product. Two other firms are younger, but no less ambitious. A large number of polyurethane products receive more and more feedback and various reviews.

Manufacture of polyurethane silentblocks

Popular products made of polyurethane are so attracting attention that they cause a desire to make them independently. It would seem that it can be simpler: take the finished powder from the necessary components and, having withstood the desired temperature and pressure, get the desired elastomer. Having a shape, you can fill the polyurethane in the liquid phase and at the output you can get, for example, the rear silent blocks.

In reality, everything is not so rosy. Without special equipment, high-quality products can not be obtained. But only the excellent quality and chic properties attract first of all. That's why famous manufacturers are not so many. Knowing the real feedback, it's easy enough to determine for yourself the right supplier.

Silent blocks from polyurethane own hands

At once it is necessary to tell, that qualitative polyurethane products independently to make it is practically impossible. In addition to specialized metalworking machines, it is necessary to have equipment and facilities for the production of polyurethane. An artisan method at home can only get the elastomer itself, but its quality can not be compared with industrial products.

The same rear silent blocks on cars of any manufacturer have hard set parameters. Not every industrial production can produce an article with the same characteristics. In addition, the smaller the batch of products, the higher the final cost.

Application

Silentblock is a common element in the design of any car. Therefore, the use of polyurethane silentblocks is not limited to foreign cars, they are also used in domestic cars. Most of all, polyurethane products are valued in sports cars, because there is a need for a greater margin of safety, which does not give rubber. In sports pendants are used the most solid polyurethane silentblocks, reviews they get deserved.

The next category of cars, in which the polyurethane has proven itself, are SUVs. Usual rubber here quickly enough wears out and does not fulfill the functions inherent in it. Silentblock levers, bush stabilizers - it all goes to cheers.

Domestic cars for the use of polyurethane products are in the last place, and this place is determined precisely by feedback. After all, by the number of volumes sold, our motorists will give foreign cars a head start. Silent blocks VAZ uses in the same quantities. And many want to test the wear resistance of polyurethane on your car.

Reviews about polyurethane silentblocks on VAZ

The park of domestic cars includes both passenger and cargo-and-passenger, and off-road cars and cargo. At the same time, the biggest use of polyurethane was VAZ machines. Polyurethane silentblocks for "Niva" work well in all weather conditions and prolong the time until the next repair. VAZ-2121 is a popular inexpensive model for the roads of the hinterland and marching conditions. The investment in the polyurethane suspension, according to feedback, is justified.

Polyurethane silentblocks on VAZ-2107 also have such positive qualities as durability, long operation and improved handling. At the same time, Russian classics acquire extra rigidity, which can repel lovers of comfortable driving. After all, rubber as a softer material gives a feeling of softness and comfort, which is not enough for all on domestic vehicles.

Among the manufacturers of polyurethane for Russian cars is the brand "SS20 Sport". Polyurethane silent blocks (VAZ) have a bright red color for sports suspension and classic yellow for standard options. The increased stiffness of the "SS20 Sport" series guarantees maximum controllability and the largest margin for strength and durability.

Why polyurethane products in different colors?

Polyurethane silent blocks on VAZ-2107, GAZ, UAZ and even on foreign cars can have different colors. And if the yellow color has already become familiar, then red, blue and green can from the first time embarrass.

Polyurethane itself does not initially have a color. Dyes are added specifically to mark a particular composition. Therefore, to determine the properties you like, for example, a blue silentblock, you need to read the product description. Different manufacturers under the same color can produce goods with different physical and chemical properties.

Unified standards for polyurethane products, unfortunately, not yet. However, yellow polyurethane silentblocks, according to reviews, are considered the softest.

Reviews of polyurethane application on foreign cars

Many motorists after viewing ads about polyurethane began to use polyurethane silentblocks in their cars. Reviews of the VAZ-2110 or Toyota did not make much of a difference. The general opinion - has become much tougher. And if you save money and take a cheap polyurethane package, you can buy low-quality products.

The most good reviews are written by the owners of sports cars, which operate transport on a flat road. In cases of unevenness, the opinions of car owners changed to the opposite.

Installation Thinness

In order for polyurethane silentblocks to work exactly as they should, a number of recommendations must be followed.

First of all, before installing the silicone block it is necessary to lubricate, for example, lithol. This will add a surface elasticity and will reduce the so sarcastic all squeak. Especially it concerns the operation of products at negative temperatures.

The second point is the preliminary tightening of the suspension before the test run to run-in. In quiet mode, polyurethane silentblocks on the "Niva", for example, take their places in fact and take a working form. And only after the break-in all bolts are tightened completely.

Rubber or polyurethane

A long argument about what's best: rubber or polyurethane in silentblocks, you can forget. There are pros and cons of each side. So, rubber attracts primarily with its softness and elasticity. At the same time, the material strongly dies in winter and has a short service life. Loses before polyurethane and in work in aggressive environments.

Polyurethane, according to reviews, is indispensable for sports suspension, where you need good handling and a long service life. But already on roughness of road realities the polyurethane front silencer block will cause some inconvenience to the entire front suspension.

Conclusion

To summarize, it should be noted that polyurethane silentblocks have high attractiveness and remarkable properties. With the right selection, which takes into account the operating conditions, and also with a competent installation, polyurethane analogues will last much longer than native rubber products.